Geoege dalton



. ,DALTON\\ Apparatus for Grushin Stones, &c.

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" UNITED STATES PATENT OFFICE.

GEORGE DALTON, OF LEEDS, COUNTY OF YORK, ENGLAND.

' APPARATUS FOR CRUSHING STONES, 860.`

SPECIFICATION forming part of Letters Patent No. 223,487, dated January 13, 1880.

` Application led October 14, 1878.

To all whom it may concern m Be it known that I, GEORGE DALTON, of Leeds, in the county of York, England, (engineer,) have invented Improvements in and connected with Machinery or Apparatus for Breaking or Reducing Stones andother Hard `and Brittle Substances, parts of which improvements are also applicable to other similar purposes, of which the following is a specification.

My invention relates to further improvements in the machinery or apparatus known as Blakes improved stone breaking machines;77 and it consists, first, of improvements in machines'of thatclass in which the lever or rod for operating the movable jaw through the intervention of the toggles is worked by an eccentric; second, of improved constructions and arrangements of toggles.

And in order that my said invention may be fully understood, I shall now proceed more particularly to describe the same, and for that purpose shall refer to the several figures on the annexed sheet of drawings, the same letters of reference indicating corresponding parts in all the figures.

Figure 1 of the accompanying drawings represents a half transverse section and half sectional elevation of a machine having applied thereto' the improvement which forms the subject of the first part of my said invention, the sections being taken along the lines l 2 and 3 4, respectively, Fig. 2; and Fig. 2 is alongitudinal sectional elevation of a portion of the same corresponding to Fig. l. Fig. 3 is asectional elevation illustrating my improved construction and arrangement of the toggles.

`Referring to Figs. 1 and 2, I employ a tripleX eccentric, the three parts being marked, respectively, A A A', and I divide the connecting-rod into three parts, B B B', which are acted upon by the three respective parts of the eccentric, the two parts A A of the eccentric and those B B of the rod working in unison and forming, practically, one eccentric and rod, while the other, B', of the rod is acted upon by the other eccentric, A'. The eccentries A are formed upon the shaft C in such a position relatively to the eccentric A' that when the connecting-rods B are in their elevated position the rod B' will be depressed, as shown in the drawings, and vice versa, the Whole being, however, so arranged and combined that both parts act simultaneously by means of the respective toggles D D' upon the undivided movable jaw E in a similar manner to the ordinary rod operated by a single eccentric. By means of this arrangement an equilibrating action is obtained, whereby the liability to the fracture of the shaft G, which frequently takes place in machines of this class worked by a single-throw eccentric, is entirely obviated.

I prefer to place the engine for actuating the machine upon the side thereof, as shown at F, and to mount the crank on one side of its shaft C, the outside being thus left free for the reception of a pulley for driving any other kind of machinery.

My improved construction and arrangement of the toggles is as follows: Referring to Fig. 3, I construct the heads h of the toggle D of a concave shape, and I form on or attach to the movable jaw E, the rocking lever or eccentric-` rod B, and the frame K portions i, of a spherical or convex form, in such a manner that the heads h of the toggles shall partially embrace or surround the said portions with which they work in contact, in lieu of their entering the same, as in the ordinary method.

The portion i is represented as attached to the jaw E by a dovetail groove. It is evident that it may be readily withdrawn and replaced. Instead of attaching it by means of a dovetail groove, the groove may be circular or of any desired shape, and a bar of iron and steel inserted in the groove would serve for a number of toggles.

l may use on the toggles means for adjust` ing their length by a screw in the manner-well known to mechanics for forming extensible rods. Having now described and particularly ascertained the nature of my said invention, and the manner in whichthe same isor may be used or carried into effect, l would observe, in conclusion, that what I consider to be novel and original, and therefore claim as the invention,

1.The multiple eccentrics and eccentricroo rods, in combination with anfundivided mov- In Witness whereof l have signed my name Aable jew, substznutiallyas and for the purpose to this specification in the presence of two hereinbefore described. subscribing witnesses. y

2. The combination, with the movable jaw GEORGE DALTON 5 having' one or more seperate pieces let into e suitable recesses in the jaw and provided with Vitnesses:

portions of spherical or convex form, of the WILLIAM WARD, y Goggles provided with concave heads to pzu'- 12 Baule Street, Leeds. tialy embrace or surround the convex por- GEO. BAKKER,

Eo tions7 as set forth. Oewdigcm Lane, Leeds. s 

